Milkshake or Frappé?
The recipe is the useful distinction. Ninja publishes both a Coffee Frappé and a Coffee Milkshake, with different ingredients and preset instructions. Follow the one you are actually making. A coffee-flavoured drink is not automatically a Frappé-preset recipe.
For your first batch, keep the recipe and setting together. Changing the milk, syrup and preset at once makes it difficult to work out which change affected the result. Once you have a baseline, record one adjustment at a time.
Choose a coffee base you can repeat
Ninja’s Coffee Frappé recipe combines black coffee, half-and-half, vanilla and sugar. Prepare it as directed, dissolve the sugar, and use chilled ingredients.
For a caramel option within Slushable, open the Caramel Espresso Frappe. Its published batch contains 300 ml coffee, 1,260 ml whole milk, 320 ml caramel sauce and 10 ml vanilla: 1,890 ml in total.
That recipe’s estimated sugar balance is not a measurement of creaminess. Milk proteins, fat and aeration are outside the sugar calculation.
Scale the whole recipe, including the coffee
Choose a batch that fits your machine’s marked working range, then multiply every ingredient by the same factor. For example, scaling the 1,890 ml caramel recipe to 1,500 ml gives a factor of 1,500 ÷ 1,890 = 0.794, approximately. Its coffee portion becomes about 238 ml.
Use Slushable’s batch scaling tool for the full ingredient list. Adding only extra coffee changes both the dairy proportion and sugar concentration. Check the resulting inputs in the Ninja SLUSHi calculator before treating a variation as equivalent.
Plan to serve when the batch is ready
Ninja advises dispensing Milkshake and Frappé drinks within 30 minutes after the preset finishes to help avoid foamy output. This is texture guidance, not a food-storage limit; see its Coffee Frappé instructions.
If the drink is thin, icy or foamy, identify which symptom you have before changing the mix. Our milkshake troubleshooting guide separates temperature-setting checks from recipe and serving-time checks. Extra sugar is not a universal foam fix.
Want a familiar café flavour? Read the Dunkin-style frozen coffee guide. For the difference between a shake and an ice-blended coffee drink, see McDonald’s-style drinks in a SLUSHi.
